Machine for expanding and flanging pipe.



PATENTED MAR. 14, 1905.

L. D. LOVEKIN. MACHINE FOR EXPANDING AND PLANGING PIPE.

APPLICATION FILED FEB. 25, 1904.

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No. 784.577. PATENTED MAR. 14, 1905.

. L. D. LOVEKIN. MACHINE FOR EXPANDING AND FLANGING PIPE.

APPLICATION FILED FEB. 25, 1904.

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OM W55 4 TTORNEY.

No. 784,577. PATENTED MAR. 14, 1905. L. D. LOVEKIN;

MACHINE FOR EXPANDING AND PLANGING PIPE.

APPLIOATION FILED FEB. 25, 1904.

6 SHEETS-SHEET 3.

' .4 TTOBNEY.

No. 784,577. PATENTED MAR. 14, 1905.

L. D. LOVEKIN.

MACHINE FOR EXPANDING AND FLANGING PIPE.

APPLIUATION FILED FEB. 25. 1904.

6 SHEETS-SHEET 4.

WI TNESSES PATENTED MAR. 14, 1905.

L. D. LOVEKIN.

MACHINE FOR EXPANDING AND PLANGING PIPE.

APIEJIIIUATIOH FILED FEB. 25, 1904.

6 SHEETS-SHEET 5.

A TTUHNEI'.

No. 784.577. PATENTED MAR. 14, 1905.

L. D. LOVEKIN.

MACHINE FOB. EXPANDING AND PLA NGING PIPE.

APPLICATION FILED 313.25, 1904.

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llllli WITNESSES:

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NITED STATES Patented March 14, 1905.

PATENT OFFICE.

MACHINE FOR EXPANDING AND FLANGING PIPE.

SPECIFICATION forming part of Letters Patent No. 784,577, dated March 14, 1905.

A li atio fil d February 25, 1904. Serial No. 195,231.

To (bi/Z whmn it nuq concern:

Be it known that I, LUTHER D. LOVEKIN, of the city and county of Philadelphia, State of Pennsylvania, have invented an Improvement in Machines forExpanding and Flanging Pipe, of which the following is a specification.

My invention has reference to machines for expanding and flanging pipe; and it consists of certain improvements which are fully set forth in the followingspecification and shown in the accompanying drawings, which form a part thereof.

The object of my invention is to provide a machine adapted to expand and flange pipes in an accurate and speedy manner with attendant cost for labor reduced to a minimum.

In carrying out my inventionI provide the main frame with suitable clamping-jaws for grasping the pipe and holding the flange or ring when used and combine therewith a sliding head movable to and from the clampingjaws, in which is journaled a tool-socket carrying the expanding and flanging tool, and stationary power devices for rotating the toolsocket while permitting its longitudinal adjustment.

My invention also comprehends minor details of construction, which, with the above features, will be better understood by reference to the drawings, in which Figure 1 is a longitudinal sectional elevation of a machine embodying my invention. Fig. 2 is a cross-section of same on line ;1 y of Fig. 1. Fig. 3 is a cross-section of same on line es of Fig. 1. Fig. 4 is a cross-section of same on line mm of Fig. 1. Figs. 5, 6, and 7 are detail views of the grips for the pipe. Figs. 5 and 6" are detail views of the clamps for the pipe-flange with the grips detached. Figs. 8 and 9 are elevations of the adjustable brackets for the clamping devices. Figs. 10 and 11 are sectional views showing the pipe and flanges before and after being operated upon by this machine. Fig. 12 is a front elevation of a modification of the clamping device for the pipe-flange. Fig. 13 isalongitudinal sectional view of same. Fig. 14 is a cross-section of same on line 10 Q0. Fig. 15 is a sectional view of a pipe-union which may be pro dueed by use of my improved machine. Fig.

the friction when rotating.

16 is a longitudinal section of the expanding and flanging tool removed from the machine.

Fig. 17 is a cross-section of the same on line 2? t. and Fig. 18 is a cross-section of the same on line The machine consists of a cast-iron base 1, having at the rear end a motor 16 for operating it, or it can be driven from any other source of power, as desired. The motor drives the machine by means of a belt 15, leading to the cone-pulleys 1 1, which permit of variable speeds being used, or the cone-pulleys may be driven by means of any other source of power in case the motor is not desired. The belt 15 may be tightened by an adjustable tightener-pulley device 17. The shaft 13 is driven by the cone-pulleys 14, and this shaft is provided with a worm 12, which engages a worm-wheel 11. The worm-wheel 11 has a long sleeve 9 journaled in the rear head 10, and said worm-wheel and its sleeve are free to revolve. The inner bore of this sleeve is provided with a key 9 and receives a central or driven shaft 8, which is through the key caused to revolve, while being permitted to move freely forward and backward, as desired. This worm and worm-wheel, together with their head 10, all form a fixed part of the machine with relation to the driving mechanism. The central shaft8 is formed with socket-head 7 at its forward end for supporting the expanding and flanging tools, and this socket-head is journaled in an adjustable head 2 and is provided with thrust or antifriction rings 7 at the front end and between it and the said adjustable head 2 to reduce The socket-head 7 revolves freely in its bearing in the adjustable head 2; but it cannot move forward unless the said head 2 is advanced. This head 2 is pro vided with adjustable guides 2 at the sides, which are adapted to longitudinal guides 3 on the bed or base and is adjusted by a screw 4, which by suitable gearing 5 may be operated by a hand-wheel 6, located at the side or other place to best suit position of the operator in charge.

The feed-screw 4 is used to move the head 2 to and from the work to be operated on as desired, the said head 2 correspondingly moving the tool 18 to or from the work. It will thus be seen that all the forward and rearward movement necessary for the various sizes of pipe is obtained by means of this sliding or adjustable head 2. As the central shaft 8 and its socket head 7 revolve in the head 2 the end thrust is transmitted to the said head, and to resist this end thrust the lower edges of the head 2 are provided with good and substantial guides 2, thus preventing any tendency of the head to lift up or rock because of this end thrust.

The front portion of the machine, as shown in Fig. 2, consists of two sliding brackets 21 21', mounted on suitable guideways 22 on the base 1 of the shoulder, and these brackets are moved to and from each other by a right and left hand screw 23, passing through suitable nuts on the under side of the same and cansing. said brackets to move to and from each other at equal distances from the center. The brackets are fitted with detachable clampingjaws 26 for receiving and holding the pipeflange and are also provided with tool-steel grips 30 for holding the pipe 23 centrally and preventing it from turning while being expanded. The clamping-jaws 26 are made with grooves 28 of suitable size to permit the pipe-flange 25 being held in the same, (independent of the pipe.) These grooves 28 are faced on the rear side, so as to be in perfect transverse alinement with the central shaft, which permits the flange being placed exactly in position. At the rear of the clamps suitable set-screws are located, so as to force the faced portion of the pipe-flange against the faced portion of the jaws 26. The back of the flange 25 being a rough casting and at times having bossesmakes this method of securing most practical. The clamping-jaws 26 have studs 27, which fit into holes in the brackets 21, to which they are clamped. The grips 30 have shank portions which fit in grooves upon the clamping-jaws 26 and are clamped in place by clamping-screws 31, which pass through slots 31 to permit lateral ad- I j ustment of the jaws to suit the varying diameters of the pipe relatively to the maximum diameters of the pipe-flange.

The expanding and flanging tool 18 may be of any suitable construction, that shown having the cylindrical expanding-rollers 19 and the taperingflanging-rollers 20. The shank 18 fits into the revolving socket 7. The expanding-rollers 19 are carried in sliding blocks 19 and are moved radially out and in by the tapered shaft 18, which is moved longitudinally by the screw-threaded hand-wheel 18 which operates upon a threaded extension from the shaft 18*, as shown. Any other form of expanding and Hanging tool may be used in place of that shown.

In using this machine the pipe 24 and pipeflange 25 are held, respectively, by the grips 30 and jaws 26, and the end of the tool 13 is then fed forward into the pipe by the adj ust- 5 ment of the head 2. The shaft 8 and its sockethead 7 are rotated by the worm and wormwheel, and by these parts thetool 13 is rotated. The expanding-rollers are then spread, as is well known to all users of expanding and flanging-tools, and the pipe 24 thus caused to expand to fit tightly into the flange 25. The expanding-rollers are next relaxed and the head 2 moved slightly forward, causing the flanging-rollers 20 to flange the end of the pipe. The relation of the pipe and pipe-flange before being acted upon is shown in Fig. 10, and afteroperation by my improved machine they are as shownin Fig. 11. It will beevident' that I do not confine myself to the use of any particular tool 18, as any of the tools now in use may be employed in lieu of that shown.

In place of the form of clamping devices in Figs. 12, 13, and 14. Referring to these figures, the head 32 is adapted to the guides 22 of the base and adjusted transversely by the screw 23. It is provided with a circular opening having an annular shoulder 34. Semicircular supporting-plates 33 33 are fitted to the head 32 and rest against the shoulder 34. The pipe-flange rests against these plates 33 and is clamped in position upon them by clamps 35 and screws 36. The grips 30 may be used with this form of clamp as well as the clamping-jaws 26.

WVhere no pipe-flange is employed, the pipe 24 when expanded and flanged may be fitted 14, and solder sweated or brazed in the annular opening presented by the flanged end, as at 37.

While I prefer the construction shown in the drawings as most excellentlyadapted for the commercial use of my invention, nevertheless I do not confine myself to the minor details of construction, as these may be varied without departing from the spirit of the invention.

Having now described my invention, what I claim as new, and desire to secure by Letters Patent, is-

1. A machine for expanding and flanging pipe of the character described having a rotating socket-head for a detachable expanding and fianging toolcarried in a sliding head and having a rearwardly-extending shaft, combined with gearing for rotating the shaft of the socket-head fixedly located on the machine and maintaining connection with the said shaft of the socket-head during its longitudinal adjustment, and clamping devices for the pipe and pipe-flange consisting of a support for the pipe-flange having clamping devices and grips for the pipe provided with toothed jaws.

2. In a machine for expanding and flanging pipe, the combination of the rotating toolcarrying socket-head 7 journaled in a sliding adjustable head 2 and having a rearwardlyextending shaft 8, annular antifriction-rings shown in Fig. 2 I may employ the form shown upon another pipe end 24, as shown in Fig.

7" to receive the end thrust between the socket-head and sliding head, a worm-wheel carried in fixed bearings to rotate the shaft 8 while permitting adjustment of the sliding head, and clamping devices arranged in front of the socket-head.

3. In a machine for expanding and flanging pipe, the combination of the base having guides 3 and 22 arranged at right angles to each other, a sliding adjustable head 2 adapted to the guides 3, a rotating socket-head 7 having a socket for the tool and journaled in the sliding head, and clamping devices consisting of clamps for the pipe-flange and grip-jaws for the pipe adjustable to and from each other on the respective clamps arranged in front of the socket-head and adjustably supported on the guides 22.

4:. In a machine for expanding and fianging pipe, the combination of a rotating sockethead for the expanding and flanging tool, means to adjust it longitudinally of its axis, transversely-arranged guides on the base, two adjustable brackets guided upon the guides and movable to and from each other by a screw-shaft device, clamping-heads carried by the brackets for holding the pipe-flange, and grip-jaws carried by the clamping-heads for holding the pipe against rotation and end thrust.

5. In a machine for expanding and fianging pipe, the combination of the rotating and longitudinally adjustable socket head for the tool, with two independent]y-operated clamping devices for clamping opposite sides of the pipe-flange, and two gripjaws respectively secured to the clamping devices and independently adjustable to or from the axis of the pipe to suit pipes of various sizes.

6. In a machine for expanding and flanging pipe, the combination of means for holding the pipe and pipe-flange, a rotating toolsocket head movable to and from the means for holding the pipe and having a rearwardlyextending shaft, a rotating sleeve mechanically connected to rotate the shaft while permitting of its longitudinal adjustment, means to rotate the sleeve consisting of a wormwheel and worm, and a driving-shaft to rotate the worm.

7. In a machine for expanding and Hanging pipe, the combination of means for holding the pipe and pipe-flange, a rotating toolsocket head movable to and from the means for holding the pipe and having a rearwardlyextending shaft, a removable expandingand fianging tool carried by the socket-head, arotating sleeve mechanically connected to rotate the shaft while permitting of its longitudinal adjustment, a stationary bearing for supporting the sleeve at a fixed distance from the means for holding the pipe and pipe-flange, and gearing for rotating the sleeve.

8. In a machine for expanding and flanging pipe, the combination of means for holding the pipe and pipe-flange, and a rotating sleeve supported in a fixed bearing and arranged at a fixed distance from the means for holding the pipe and pipe-flange, with an adjustable sliding head intermediate of the sleeve and means for holding the pipe and pipe-flange and movable to or from the said partsas required, and a rotating tool-socket head carried by the sliding head and having a rearwardly-extending shaft extending through the rotating sleeve and being rotated thereby while permitting of longitudinal adjustment.

In testimony of which invention I have hereunto set my hand.

LUTHER D. LOVEKIN.

WVitn esses:

R. M. HUNTER, R. M. KELLY. 

